Radiant Cut Lab Grown Diamond Hidden Halo Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 8

$777.00

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Independently graded by IGI IGI Report Included Selected 0.50 ct+ lab-grown center or primary diamond · IGI grading report · Signora Jewelry Certificate included. 1 ct lab-grown diamond · IGI report · Signora Certificate included.

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Complimentary · hand-engraved to order · adds about 3–4 days.

Estimated dispatch: 7 business days Duties & taxes prepaid

Ring size guide

Lay a ring you own flat on the circle and slide until it sits just inside it — or set its inner diameter directly.

Measure the inside of a ring that already fits — inner edge to edge — with a ruler in mm, then set it below. No ring handy? Try Measure your finger.

14 mm 24 mm 17.3 mm

Inner diameter mm

US size

UK size

EU size

Circumference

54.3 mm

Between sizes? Always choose the larger size. Fingers are slightly bigger in the evening — measure then for the best fit.

Method 1 — Use an existing ring

Find a ring that fits the intended finger comfortably.
Place it flat and measure the inner diameter (inside edge to inside edge) in mm.
Enter that measurement in the Measure a ring tab.

Method 2 — Wrap and measure

Wrap a thin strip of paper around the base of your finger.
Mark where it overlaps — measure that length in mm (your circumference).
Divide by 3.1416 (π) to get your diameter, then use the Measure a ring tab.

Tip: Middle finger sizes typically run half a size larger than the ring finger. If between sizes, go up. Measure in the evening — fingers are slightly larger then.

7US size

US	UK	EU	Diameter	Circumference

Highlighted row = your converted size. Most common women's sizes are US 6–7. All measurements in mm.

Selected: —

The Signora Promise

Hand-finished in SuratMade to order

Reports where statedExact scope shown

Insured deliverySigned & tracked

Secure checkoutShopify checkout

Standard-design returns30-day eligibility

Final inspectionChecked before dispatch

About This Ring

Radiant Cut · Halo

Center

Radiant Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Halo

An independent IGI grading report is included when the selected individual lab-grown center or primary diamond is 0.50 ct or larger.

Detail	In the Photos	Customizable
Center Diamond	Radiant Cut · 9.20 × 7.10 mm · Approx. 3.00 ct	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct
Hidden Halo	22 Round Brilliant Diamonds · Approx. 0.10 ct	Scales with selected center size
Shoulder Diamonds	4 Marquise Cut Diamonds · Approx. 0.10 ct	Scales proportionally
Total Diamond Weight	Approx. 3.20 ct	Varies with selected center size
Stone Type	Lab Grown Diamond	—
Setting	Four-Prong Cathedral Basket with Hidden Halo	—
Finish · Occasion	High Polish · Engagement, Anniversary, Bridal	—

At a glance

A radiant cut lab grown diamond hidden halo engagement ring from Signora Jewels.

The ring shown features a 9.20 × 7.10 mm radiant cut lab grown diamond weighing approximately 3.00 ct. Twenty-two round brilliant diamonds form the hidden halo while four marquise accent diamonds decorate the shoulders for approximately 0.20 ct of accent diamonds.

Made to order in 11 metals: Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum.

Select your preferred center diamond size and precious metal using the options on this page.

The 9.20 × 7.10 mm radiant cut center sits in a four-prong cathedral basket that keeps the corners secure while leaving the pavilion open to light. The hidden halo sits beneath the center stone instead of around its outline, so from above the radiant remains the clear focal point while extra brilliance appears as the ring moves.

Four marquise accent diamonds are positioned along the shoulders, creating a graceful transition into the slim band without overpowering the center. The cathedral shoulders lift the basket above the finger while the open gallery keeps the profile light and makes cleaning beneath the center easier. Signora Jewels crafts every ring to order in your selected precious metal and diamond size.

Design Highlights

Customizable radiant cut lab grown diamond from 1 ct to 4.5 ct
Four-prong cathedral basket
Hidden halo with 22 round brilliant diamonds
Four marquise shoulder accent diamonds
Open gallery construction
High polish finish

Browse more Solitaire Engagement Rings, explore our Engagement Ring Guide, or compare precious metals using our Metal Guide.

Diamond & Ring Details

Specification	Details
Center Diamond	Radiant Cut · 9.20 × 7.10 mm · Approx. 3.00 ct (shown)
Hidden Halo	22 Round Brilliant Diamonds · Approx. 0.10 ct
Shoulder Diamonds	4 Marquise Cut Diamonds · Approx. 0.10 ct
Total Stones	27
Total Diamond Weight	Approx. 3.20 ct
Center Diamond Options	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct
Finish	High Polish

Measurements are approximate. Final dimensions vary according to the selected center diamond size.

About Lab Grown Diamonds

The radiant cut combines the crisp outline of an emerald shape with the sparkle of a brilliant facet arrangement. The hidden halo adds light beneath the center while preserving the clean outline of the radiant when viewed from above.

Metal, Care & Fit

Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the hidden halo and around the marquise shoulder diamonds using warm water, mild soap and a soft brush to maintain maximum brilliance.

FAQ

What is the advantage of a hidden halo?
The hidden halo sits beneath the center stone, adding sparkle from side angles while keeping the top view focused on the radiant cut diamond.

Can I choose a different center diamond size?
Yes. This design is available with center diamond options from 1 ct through 4.5 ct while maintaining the same overall style.

Why are marquise diamonds used on the shoulders?
Their elongated shape creates a graceful transition into the center basket without adding the visual weight of larger round accents.

Is the cathedral basket comfortable for everyday wear?
Yes. The cathedral shoulders support the basket from both sides while the slim band keeps the ring balanced for regular wear.

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